Ian Murray says Airdrie fans were right to boo as their side fell to a 3-0 defeat in their League One opener against Montrose yesterday.
Lewis Milne set up the opening goal for Terry Masson and then skipped through the defence to score the second five minutes into the second half, with Graham Webster adding a third from the spot after sub Blair Lyons was decked inside the box.
That 74th-minute spot kick was too much for some to bear, with several disgruntled fans leaving New Broomfield.
Murray says he didn't blame them, following an abject performance from his side.
He said: "It's not nice to see people leaving after 75 minutes, but I don't blame them.
"I think we've earned the right to say when we get it right we're OK, but I can fully understand their frustration.
"I'm as frustrated as anybody, more so, because I know how capable we are and how hard we work to get results.
"I've got no complaints about the fans booing at the end, we deserved it.
"As much as we got clapped off against Motherwell and people were dancing around, the slap is round the corner, and we've had a couple.
"I have absolutely no issue with the fans at all.
"Formations, tactics, personnel, whatever you want - Montrose were hungrier, they were better, sharper, fitter, so we need to go away and work really hard."
Airdrie travel to Dumbarton on Saturday, who also ran up a 3-0 away win at Clyde, and Murray says the hard work starts now.
"We've got a week to work hard, we've got to get ourselves together, we've got to stop talking too much about our great players and how good we are - we have to earn the right to go and play football," he said.
"I actually felt, in the game of football, there wasn't a lot in it. We actually probably played better football, but it doesn't matter - it means nothing, because we didn't match runs, we didn't get aggressive.
"We probably gave away five free kicks in the game, and I'm not wanting my players going and kicking or anything like that, but you've got to show aggression, and we showed none. Absolutely none."
Murray revealed that Salim Kouider-Aissa pulled up just after the interval with a hamstring problem, which is likely to side-line him for at least two weeks.
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